Auxiliary sill for window structures



` M, Ji" NARDULLI AUXILIARY SILL FOR WINDOW STRUCTURES May 26, 1959 Filed Nov. '7, 1956 IIIIIII nted States Patent O AUXILIARY SILL FOR WINDGW STRUCTURES Michael I. Nardulli, Elmwood Park, Ill., assignor to Michael J. Nardulli, Angelo F. Naples, and Peter F. Nardulli, trustees Application November 7, 1956, Serial No. 620,866

1 Claim. (Cl. 2011) This invention relates to window structures and particularly to a sill adapted to be used in the installation of metal sash runways to compensate for variations in the slope of the conventional sill.

It is relatively common practice to replace conventional double hung Window sash so as to provide a different type of mounting for new sash that are to be installed, and most of these repair and replacement installations are of such a character as to provide for removable mounting of the sash or to provide for both removable and tilting sash. Where such installations are to be made, the workmen quite often encounter variations in the slope of the sill of the original window frame, and by reason of such variation the installation is rendered more difficult. It is the primary object of the present invention to enable the parts for such repair and replace ment installations to be prepared in advance, and to enable compensation to be made readily and easily on the job for variations in the slope of the sill. More particularly, it is an object of the present invention to provide a supplemental sill that is self-adjusting to the extent that it may cooperate with pre-cut metal runways that are used while at the same time being capable of installation on sills of different slopes.

Other and further objects of the present invention will be apparent from the following description and claim, and are illustrated in the accompanying drawings, which, by way of illustration, show a preferred embodiment, of the present invention and the principles thereof, and what is now considered to be the best mode in which to apply these principles. Other embodiments of the invention embodying the same or equivalent principles may be used and structural changes may -be made as desired by those skilled in the art without departing from the invention.

In the drawings:

Fig. l is a fragmental perspective view illustrating window installation embodying the sill structure of the preseut invention.

Fig. 2 is a transverse section view through the sill por tion of such a window structure; and

Fig. 3 is an enlarged portion of Fig. 2.

For purposes of disclosure the invention is herein illustrated as embodied in a 'window structure having a frame that has an inner `sill 11 and au outer sloping sill 12, and this frame also has jam-bs 13, only one of which is shown, and has the usual head.

In the repair and replacement installations, the original sliding sash are removed, and the space between the inner stop 14 of the jamb and the outer stop 15 thereof is cleared by removal of the original parting bead and any pulley structure or counterbalance means that may project beyond the bottoms of the original sash runways. The desired metal sash runways are then put in place, and as herein shown, such runways are of the yielding type and are provided by installing a sash guide assembly 18 of the character disclosed in my copending application Serial No. 620,944, led November 7, A1956. Such sash guide assembly 18 includes a housing 18H and a pair of Patented May 26, 1959 z resiliently mounted guide chanels` 18C that are yieldingly supported in the housing 18Hv as described in my aforesaid copending application.

In preparing such runway structure for a particular job, the top end of the runway structure 18 is cut at right angles so that it may be tted against the horizontal lower surface of the head of the window frame, and the lower end is cut to the proper dimension so as to provide a lower end edge E that will lit in place and extend downwardly beyond the upper surface of the inside sill 11. Under the present invention, the lower edge of the runway may be cut in the factory to a dimension and to an angle that is sufficiently close to the actual dimensions required to enable the runway structure 18 to be installed without further cutting operations on the job. In accomplishing this, the normal range variation that is likely to be encountered in the slope angle of the sill 12 is taken into account, and I have determined that this variation in the slope angle of the sill is usually between about 10 and 14 with respect to the horizontal. Therefore, in utilizing the present invention, I cut the lower end edge of the metal runway 18 at an angle of 10 to the longitudinal axis of the runway, as indicated in Figs. l and 3 of the drawings, the length of the runway is established so that the inner edge of the runway will extend downwardly beyond the upper :sur-face of the inner sill 11, but, will be spaced upwardly a short distance above the inner edge of the sill 12.

Then, when the runway is to be installed on the job, the varying amount of space that is left beneath the lower edge of the metal runway 18 is taken up by an auxiliary sill structure 20 that embodies the feature of the present invention. Thus, the sill 20 is made from a thin sheet 21 of metal, and on the lower surface of the sheet 21, a relatively thick sheet of resilient compressible material, such as sheet 22, of a foam plastic is secured by means of adhesive. The auxiliary sill 20 is cut to such a length that it will project at its opposite ends beneath the lower ends of the metal sash runway 18C, when the sill 20 is thus positioned the resilient sheet 22 is compressed so that the upper surface of the metal sheet 21 is held firmly against the lower surface of the runway structure 18. Because the metal sheet 21 is relatively thin as herein sho'wn, the intermediate portions thereof are held in substantially uniform plane by a series of screws 24 that are extended downwardly through the sheet 21 at spaced points throughout the length of the sill 20 and substantially midway between its edges.

With the sill structure 20 that is thus provided, the installation of the metal runway 18 is materially simpliiied, and it is to benoted that while a particular form and type of sash runway 18 is disclosed herein, the present invention may be utilized in connection with many other types of metal sash runways that are to be installed in this general manner.

From the foregoing description, it will -be apparent that the present invention provides an improved sill structure that simplifies the installation of metal sash and provides for a uniformly neat and finished appearance in the resulting installation.

Thus "While I have illustrated and described preferred embodiments of my invention it is to be understood that changes and variations may be made by those skilled in the art Without departing from the invention.

I claim:

In a window installation embodying a window frame with jambs, a head and a sill, and having metal sash runways extended vertically along the jambs and downwardly toward the sill, the combination of an auxiliary sill formed from an upper thin metal plate and a lower resilient layer, said auxiliary sill having its ends extended underneath the lower ends of the metal runways to compress 'said resilient layer so that the resilient layer holds the' metal -sheet in' engagementwith the lower ends of s m." p, s

References Cited in the file patent UNITED STATES PATENTS French July 14, 1891 Wieting Mar. 27, 1934 Money Aug. 29, 1939 Neff Dec. 7, 1945 

